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- package com.nguyenmp.ErrorTest;
- import android.app.Activity;
- import android.app.AlertDialog;
- import android.app.Dialog;
- import android.content.Context;
- import android.os.Bundle;
- import android.os.Handler;
- import android.os.Looper;
- import android.os.Message;
- import android.view.View;
- import android.widget.Button;
- import android.widget.Toast;
- public class MyActivity extends Activity {
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- //Init the UI
- setContentView(R.layout.main);
- //Create a new handler, passing it the current activity context
- final Handler handler = new MyHandler(MyActivity.this);
- //Bind a listener to the button on the UI
- View view = findViewById(R.id.button);
- view.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View v) {
- //Start a new thread that will send a message to that handler
- new MyThread(handler).start();
- }
- });
- }
- private class MyThread extends Thread {
- private final Handler mHandler;
- MyThread(Handler handler) {
- mHandler = handler;
- }
- @Override
- public void run() {
- //Dispatch message to UI thread asynchronously
- Looper.prepare();
- mHandler.dispatchMessage(mHandler.obtainMessage());
- }
- }
- private class MyHandler extends Handler {
- private final Context mContext;
- MyHandler(Context context) {
- mContext = context;
- }
- @Override
- public void handleMessage(Message msg) {
- //Show that we got the message
- AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
- builder.setTitle("HelloWorld");
- builder.setMessage("It worked!");
- builder.show();
- //Another variant of showing that we got the message
- Toast.makeText(mContext, "Message Received", Toast.LENGTH_SHORT).show();
- System.out.println("Yeah");
- }
- }
- }
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